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jok3333 [9.3K]
3 years ago
10

Which of these best describes how an appropriate star chart is selected to locate objects in the sky

Physics
1 answer:
Umnica [9.8K]3 years ago
4 0
There are no good descriptions on that list.
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Afootball of mass 550g is at rest on the ground the football is kicked with a force of 108 newton the footballers boot is in con
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If "0.3 minute" is correct, then it's 9,543,272 Joules.

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A portion of the atmosphere that becomes warmer than surrounding air will ____.
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In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the sys
nydimaria [60]

Answer : The final energy of the system if the initial energy was 2000 J is, 3500 J

Solution :

(1) The equation used is,

\Delta U=q+w\\\\U_{final}-U_{initial}=q+w

where,

U_{final} = final internal energy

U_{initial} = initial internal energy

q = heat energy

w = work done

(2) The known variables are, q, w and U_{initial}

initial internal energy = U_{initial} = 2000 J

heat energy = q = 1000 J

work done = w = 500 J

(3) Now plug the numbers into the equation, we get

U_{final}-(2000J)=(1000J)+(500J)

(4) By solving the terms, we get

U_{final}-(2000J)=(1000J)+(500J)

U_{final}-(2000J)=1500J

U_{final}=2000J+1500J

U_{final}=3500J

(5) Therefore, the final energy of the system if the initial energy was 2000 J is, 3500 J

5 0
3 years ago
Which the answer It's science
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The answer is A. ive done a 5-k race, so its for sure 3 miles. 
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What do the three variables (f,m, a) in the equation mean?
Anna [14]

Answer:

f=force m=mass and a=acceleration

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